Spring force assembly for biasing or actuating stoppers of syringes, injection pen cartridges and the like
US11027059B2 · kind B2 · utility
12Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2014 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | May 4, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14506
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spring force assembly for biasing a displaceable stopper of a liquid medicament cartridge including a spring element arranged along a longitudinal axis, with brace elements and coupling elements, with the coupling elements restricting the distance between the brace elements which also restricts the possible expansion of the spring element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.